23 million out of work, rising unemployment, an economic crisis at the kitchen table and spent his energy and passion for two years fighting for obama care instead of fighting for jobs for the american people. >> we did work on this alongside working on jobs, because this is part of making sure that middle class families are secure in this country. >> reporter: president obama on defense. romney challenging his record as both now wait to see if this exchange had any impact on voters. it had impact online. on twitter this was the most tweeted event in u.s. plolitica history. tracie potts, nbc news, denver. >> this morning everyone is weighing in on who they think won that debate, that includes a group of political science students who watched the debate in downtown san jose last night. after it was over, even some of the president's biggest supporters in that room felt that romney had a slight edge. >> overall romney in my perspective did a little bit better. he wasn't as specific as obama, but he set out to attack obama more. >> a political science professor from san jose state says she t